Custom Autosound designed and manufactured these speakers specifically for 'under seat' or horizontal 'wall' installations. 'Could be used on large 'parcel shelves' - wherever! Compact unit with one 5½" woofer and piezo tweeter in each enclosure. Under seat fit for most pre '78 cars and trucks. 120 watt capacity! If you've got the space we have the solution! Each enclosure measures 3" high X 8-1/4" wide X 11-1/4" long. Sold in pairs.